Paper bottles and the like and method of manufacture



Oct. 22, 1946. J ANNEN 2,409,655

PAPER BOTTLES AND THE LIKE, AND METHOD OF MANUFACTURE Filed March 6,1943 2 sheets-sheet 1 V V W I v INVENTOR. I 7 4 (/077766 5/7/1276 Oct.22, 1946. EANNEN 2,409,655 PAPER BOTTLES AND THE LIKE, AND METHOD OFMANUFACTURE Filed March e, 1943 2 Sheets-Sheet 2 7 INVENTOR.

. c/amea E flzman Patented Oct. 22, 1946 PAPER. BOTTLES AND THE LIKE ANDMETH- OD OF MANUFACTURE James E. Annen, Kalamazoo, Mich., assignor toSutherland Paper Company, Kalamazoo, Mich.

Application March 6, 1943, Serial No. 478,225

11 Claims. 1

This invention relates to improvements in paper bottles and the like,and method of manufacture.

The main objects of this invention are:

First, to provide a paper bottle or container well adapted for use as amilk bottle which may be formed entirely of paper stock and is welladapted to receive and retain a closure of the disk type.

Second, to provide a container having these advantages which may beformed of relatively ligh, stock and at the same time is strong and r1g1Third, to provide a structure having these advantages which iseconomical to produce.

Fourth, to provide a method of manufacturing containers of the typedescribed which enables very large production by machinery.

The accompanying drawings illustrate both the steps of manufacture andthe completed container.

Fig. lis a blank from which the wall or body is formed.

Fig. 2 is a side elevation of the formed wall of the body.

Fig. 3 is a fragmentary side elevation illustrating the two stepssucceeding the forming of the body, namely, the forming of a flange onthe upper end of the body and the application of glue thereto.

Fig. 4 is a fragmentary side elevation illustrating the step ofinserting a top member within the container wall.

Fig. 5 is a fragmentary side elevation showing the structure after thetop member has been beaded or crimped over the rim on the body member.

Fig. 6'is a top view of the structure as shown in Fig. 5.

Fig. '7 is a top view after the central portion of the top member hasbeen punched out to provide a supporting flange or ridge for theclosure.

Fig. 8 is a fragmentary vertical section after the bottom has beeninserted and secured.

Fig. 9 is a fragmentary longitudinal section illustrating one means forforming the flange on the upper end of the container wall or body.

Fig. 10 is a fragmentary view partially in longitudinal sectionillustrating another means for forming the flange on the wall or bodymember.

Fig. 11 is a fragmentary section illustrating suitable mechanism forcrimping or clamping the top member, showing in retracted position themeans for securing the top member to the wall or body member and thepunching out of the central portion of the top member.

Fig. 12 is a fragmentary view of the parts shown in Fig. 11 in actuatedposition.

Fig. 13 is an enlarged fragmentary vertical section illustrating thecompleted top portion of the structure with a closure disk in position.

Fig. 14 is a perspective view of a top member prior to its applicationto the body or wall member.

Fig. 15 is a perspective view of the blank from which the bottom of thecontainer is formed.

Fig. 16 is a view of the completed container partially in verticalsection and partially broken away.

In the accompanying drawings the invention is illustrated as it has beenembodied and practiced in the manufacture of milk bottles, although itwill be understood that the container of this invention is adapted for awide variety of uses.

The conical tubular body or wall member I is formed of a suitable blank2 having adhesive 3 applied to one edge thereof, the edges of the blankbeing brought together into lapping relation and sealed throughout. Forsome purposes a thermoplastic adhesive may be desirable. After formingthe blank the next step in the method is the forming of the flange 4 onthe upper end thereof.

In production it is preferable to employ a suitable conveyor having aseries of tubular conical mandrels 5 thereon, these mandrels having aninternally cylindrical portion 6 at their upper ends. The mandrel alsoconstitutes a die memher, as will be pointed out. The mandrels are ofsuch size as to effectively support the wall or body members and thesleeves thereon with their upper ends projecting above the mandrels.

The flange 4 is formed by turning the same outwardly as by means of theforming member or die member I having an annular curved recess 8 at itslower end. However, the flange may be formed by a rolling or spinningoperation, a spinning member 9 being shown in Fig. 10.

After the flange is formed an adhesive sealing material is appliedthereto and the cup-shaped top member I!) formed of suitable paper orfibrous stock is inserted therein as shown in Fig. 11, with the end ofthe mandrel in supporting relation to the top member below itscylindrical side walls. In this position the top member projects abovethe flange on the body member. The forming member H is then actuated,this forming memher having a reduced tip portion I2 adapted to enter andsupportingly fit within the wall of the top member and an annulardownwardly facing curved channel I3 which gradually crimps or turns theprojecting edge of the top member around the flange 4 into clampingretaining engagement therewith. The flange is also curved during thisoperation as shown in Fig. 13. This step is performed before theadhesive sealing material has set and it spreads and brings the adhesivematerial into thoroughly complete sealing and adhering relation to thesetwo parts.

Associated with the forming member is a punch aaoaess M which isactuated in timed relation to the actuation of the forming member sothat after the forming member is completely actuated the punch isactuated to punch out the central portion l5 of the top member. The topmember is effectively clamped in position during this punching operationso that it is not distorted. As stated, the mandrel performs the doublefunction of a mandrel and female die member. This operation forms asupporting ledge or flange M5 for a disk-like type of closure ll asshown in Fig, 13.

It will be noted that there is a slight space or clearance shown at I8in Fig. 13 between the cylindrical side portion of the top member andthe conical wall of the container which permits some springing orexpanding of the top member adjacent the closure supporting seat thereofwhen the closure disk is forced or pushed into position. I have notattempted to illustrate this springing action as it would be relativelyslight where all parts are made in proper proportion, but it is ofdecided advantage in the effective retaining of the closure and inaccommodating closures varying in diameter.

After the top member has been applied to the wall the bottom 28 isapplied. This is formed from a disk I9 of fibrous material, see Fig. 15.A flange 20 is formed on the disk and the bottom thus formed is insertedin the lower end of the container. The bottom wall is then crimped orfolded around the flange 28 as shown at 2%. Adhesive is preferably usedat the joint in this operation. The means for applying the bottom arenot illustrated as suitable mechanisms for performing this operation areknown in the art.

Suitable waterproofing may be applied if desired, paraffin being quitecommonly used.

The method of this invention can be very economically practiced, thatis, a fairly simple machine may be used with substantial and uniformproduction. The container is strong and rigid, the top membereffectively reinforcing the wall or body member as well as providing asuitable rim and a closure seat. The structure illustrated is designedas a milk bottle or like container of the conical type, but it will beunderstood that other forms of containers or closures may be made, andcontainers adapted for various uses. It is believed that the disclosuremade will enable those skilled in the art to embody or practice theinvention as may be desired.

Having thus described the invention what is claimed as new and desiredto secure by Letters Patent is:

1. The method of making milk bottles and like containers of fibrousmaterial adapted to receive a closure disk comprising the steps offorming a tubular conical wall of fibrous material, forming anout-turned substantially flat flange on the upper edge thereof, applyingan adhesive sealing material to said flange, inserting a cup-shaped topmember of fibrous material in the upper end of said wall with a portionof the side wall thereof projecting above the said wall flange,supporting said top member against axial movement by a tubular conicaldie and mandrel member supportingly fitting within said wall member andsupporting said top member below the side wall portion thereof, crimpingthe projecting portion of the side wall of said top member around saidflange on said wall prior to the drying of the adhesive sealing materialand simultaneously curving said flange downwardly and clamping said topmember into embracing relation thereto whereby the top memberconstitutes a curved rim and a reinforcing member for the wall of thecontainer, punching out the central portion of said top member toprovide an inwardly projecting flange adapted to support a disk-likeclosure, and thereafter securing a bottom of fibrous material within thewall of the container.

2. The method of making milk bottles and like containers of fibrousmaterial adapted to receive a closure disk comprising the steps offorming a tubular conical wall of fibrous material, forming anout-turned substantially flat flange on the upper edge thereof, applyingan adhesive sealing material to said flange, inserting a cup-shaped topmember of fibrous material in the upper end of said Well with a portionof the side wall thereof projecting above the said wall flange,supporting said top member against axial movement by a tubular conicaldie and mandrel member supportingly fitting within said wall member andsupporting said top member below the side wall portion thereof, crimpingthe projecting portion of the side wall of said top member around saidflange on said wall prior to the drying of the ad hesive sealingmaterial and simultaneously curving said flange downwardly and clampingsaid top member into embracing relation thereto whereby the top memberconstitutes a curved rim and a reinforcing member for the Wall of thecontainer, and punching out the central portion of said top member toprovide an inwardly projecting flange adapted to support a disk-likeclosure.

3. The method of making milk bottles and like containers of fibrousmaterial adapted to receive a closure disk comprising the steps offorming a tubular conical wall of fibrous material with an out-turnedflange on the upper edge thereof, applying an adhesive sealing materialto said flange, inserting a cup-shaped top member of fibrous material inthe upper end of said wall with a portion of the side wall thereofprojecting above the said wall flange, supporting said wall and topmember against relative axial movement by a tubular conical die andmandrel member supporting said top member below the side wall portionthereof, crimping the projecting portion of the side wall of said topmember around said flange on said wall into embracing relation theretowhereby the top member constitutes a curved rim and a reinforcing memberfor the wall of the container, punching out the central portion of saidtop member to provide an inwardly projecting flange adapted to support adisk-like closure, and thereafter securing a bottom of fibrous materialwithin the wall of the container.

4. The method of making milk bottles and like containers of fibrousmaterial adapted to receive a closure disk comprising the steps offorming a tubular conical wall of fibrous material with an out-turnedflange on the upper edge thereof, applying an adhesive sealing materialto said flange, inserting a cup-shaped top member of fibrous material inthe upper end of said wall with a portion of the side wall thereofprojecting above the said wall flange, supporting said wall and topmember against relative axial movement by a tubular conical die andmandrel member supporting said top member below the side wall portionthereof, crimping the projecting portion of the side wall of said topmember around said flange on said wall into embracing relation theretowhereby the top member constitutes a curved rim and a reinforcing memberfor the Wall of the container, and punching out the central por tion ofsaid top member to provide an inwardly projecting flange adapted tosupport a disk-like closure.

5. The method of making containers of fibrous material adapted toreceive a closure disk comprising the steps of forming a tubular wall offibrous material, forming an out-turned substantially flat flange on theupper edge thereof, applying an adhesive sealing material to saidflange, disposing a cup-shaped top member of fibrous material in theupper end of said wall with a portion of the side wall thereofprojecting above the said wall flange, crimping the projecting portionof the side wall of said top member around said flange on said wallprior to the drying of the adhesive sealing material and simultaneouslycurving said flange downwardly and clamping said top member intoembracing relation thereto whereby the top member constitutes a curvedrim and a reinforcing member for the wall of the container, and punchingout the central portion of said top member to provide an annularinwardly projecting flange adapted to support a disk-like closure.

6. The method of making containers of fibrous material adapted toreceive a closure disk comprising the steps of forming a tubular wall offibrous material with an out-turned flange on the upper edge thereof,applying an adhesive sealing material to said flange, disposing acup-shaped top member of fibrous material in the upper end of said wallwith a portion of the side wall thereof projecting above the said wallflange, crimping the projecting portion of the side wall of said topmember around said flange on said wall whereby the top memberconstitutes a curved rim and a reinforcing member for the wall of thecontainer, and punching out the central portion of said top member toprovide an annular inwardly projecting flange adapted to support adisk-like closure.

'7. The method of making containers of fibrous material adapted toreceive a closure disk comprising the steps of forming a tubular wall offibrous material, forming an out-turned substantially flat flange on theupper edge thereof, applying an adhesive sealing material to saidflange, disposing a cup-shaped top member of fibrous material in theupper end of said tubular'wall, said top member having a verticallydisposed edge portion of the side wall thereof projecting above the saidtubular wall flange, and crimping said projecting vertically disposededge portion of the side wall of said top member around said flange onsaid tubular wall prior to the drying of the adhesive sealing materialand simultaneously curving said flange downwardly and clamping said topmember into embracing relation thereto whereby the top memberconstitutes a curved rim and a reinforcing member for the wall of thecontainer, and supporting said. cup-shaped top member against inwardthrust during the crimping and clamping operations, the supporting ofsaid top member being by supportingly engaging the bottom thereofindependently of and within said tubular wall.

8. The method of making containers of fibrous material adapted toreceive a closure disk comprising the steps of forming a tubular wall offibrous material with an out-turned flange on the upper edge thereof,applying an adhesive sealing material to said flange, disposing acup-shaped top member of fibrous material in the upper end of saidtubular wall, said top member having a vertically disposed edge portionof the side wall thereof projecting above the said tubular wall flange,and crimping said projecting vertically disposed edge portion of theside wall of said top member around said flange on said wall whereby thetop member constitutes a curved rim and a reinforcing member for thewall of the container, and supporting said top member against inwardthrust during the crimping operation, the supporting of the top memberbeing by supportingly engaging the bottom thereof independently of andwithin said tubular wall.

9. The method of making containers of fibrous material adapted toreceive a closure disk comprising the steps of forming a tubular conicalwall of fibrous material with an out-turned flange on the upper edgethereof, applying an adhesive sealing material to said flange, disposinga top member of fibrous material having a cylindrical side wall in theupper end of said container wall with a portion of the top member sidewall projecting above said wall flange, crimping the projecting portionof the side wall of the top member around the flange on said wall priorto the drying of the adhesive sealing material, said top member beingprovided with an annular closure seat at its inner end, the cylindricalwall of the top member being spaced from the conical wall of thecontainer to provide an annular space between the cylindrical wall ofsaid top member and the conical wall of the container for permittingexpansion of the inner end of the topmember when a closure is pressedtherein, and supporting said top member against inward thrust during thecrimping operation, the supporting of the top member being bysupportingly engaging the bottom thereof independently of and withinsaid tubular wall.

10. A container of fibrous material adapted to receive a closure diskcomprising a tubular wall member of fibrous material having anout-turned flange at its upper end, an annular top member of fibrousmaterial disposed within the upper end of said wall member, said topmember being crimped around said flange into closely embracing relationthereto, there being adhesive and sealing material between said flangeand said top member, said top member having an opening through its innerend surrounded by an annular flange constituting a closure seat, thelower end portion of the side Wall of said top member being spaced fromsaid tubular wall to provide expansibility of the top member relative tothe container wall when a disk-like closure of predetermined diameter isdisposed therein.

11. A container of fibrou material adapted to receive a closure diskcomprising a conical wall member of fibrous material having anout-turned flange at its upper end, an annular top member of fibrousmaterial disposed within the upper end of said wall member, said topmember being crimped around said flange into closely embracing relationthereto, said top member having an opening through its inner endsurrounded by an annular flange constituting a closure seat, the sidewall of said top member being cylindrical to provide an annular spacebetween the lower end thereof and the conical wall to permitexpansibility of the top member relative to the container wall when adisk-like closure of predetermined diameter is disposed therein.

JAMES E, ANNEN.

